一,气压变化引起水位观测值变化川—12井自八一年六月投入观测以来的资料表明,气压变化明显引起水位升降,这就是所谓的“气压效应”。气压增大,水位下降;气压减小,水位上升,即气压与水位之间存在负相关。关于气压影响水位的机理,目前认为,气压作用子井周地面,经地下介质传至含水层并转嫁给含水岩层骨架和孔隙水,同时气压直接作用于井中液面,孔隙水所获得的应 I. Changes in water level caused by changes in air pressure Data since the well was put into operation in Chuan-12 well in June 1981 shows that the pressure change obviously causes the water level to rise and fall. This is called the “air pressure effect.” Pressure increases, the water level decreases; pressure decreases, the water level rise, that is, there is a negative correlation between pressure and water level. The mechanism of the influence of air pressure on the water level is currently believed that the pressure on the surrounding surface of the sub-well is transferred to the aquifer via the subterranean medium and transferred to the aquifer skeleton and pore water. At the same time, the pressure directly affects the liquid surface and pore water in the well